Granulomatous pigmented purpuric dermatosis: report of a case with atypical clinical presentation including dermoscopic findings.

Granulomatous pigmented purpuric dermatosis (PPD) is a rare and poorly recognized histological variant of PPD, which commonly affects the distal extremities of mainly Far East Asian patients. Many of the reported cases are associated with hyperlipidemia or other associated systemic derangements. The authors hereby describe an additional case of granulomatous PPD affecting a 56-year-old Caucasian woman presenting unusually as a solitary lesion confined to the lower back. The report also describes dermoscopic findings, summarizes clinicopathological features of all the cases published till date, and discusses the histopathological differential diagnosis.